Dorman 901-991 4WD Switch

Reliable 4WD Switch for Hummer H2 Vehicles

The Dorman 901-991 4WD switch is designed specifically for Hummer H2 models, providing dependable electrical operation for your vehicle's four-wheel drive system. Featuring a matte finish and durable plastic housing, this switch ensures consistent performance in the center console area.

• Matte finish for a subtle, non-reflective appearance
• Electrical operation type for seamless 4WD engagement
• Plastic housing material for lightweight durability
• Blade terminal type with 4 or 8 terminals for secure connections
• Rectangular female connector shape for proper fitment
• Compatible with Hummer H2 center console mounting location
• No lead wires or wiring harness included, designed for direct replacement

Product Details and Specifications

The Dorman 901-991 4WD switch is engineered to meet the electrical requirements of the Hummer H2's four-wheel drive system. Its matte finish reduces glare and blends with the vehicle's interior, while the plastic housing offers resistance to wear and environmental factors. The switch features blade-type terminals and a rectangular female connector, ensuring a secure and reliable electrical connection. With 4 or 8 terminals available, this switch supports the necessary wiring configurations without the need for additional lead wires or harnesses. It is intended for installation in the center console, matching the original equipment location for straightforward replacement.

Common Applications and Problem Resolution

• Restores proper 4WD engagement when the original switch fails
• Eliminates intermittent electrical connection issues in the 4WD system
• Replaces worn or damaged switches with a compatible OEM-style part
• Addresses non-responsive or stuck 4WD switch problems
• Improves driver control over four-wheel drive activation

Installation Notes and Tips

This 4WD switch is designed for direct replacement in the Hummer H2 center console. No additional mounting hardware or wiring harness is included, so retain original components during removal. Ensure the vehicle's electrical system is powered off before installation to prevent damage. Verify terminal connections match the original switch to maintain proper function. Professional installation is recommended if unfamiliar with vehicle electrical systems.

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 901-991 4WD switch undergoes quality inspections to ensure reliable operation in Hummer H2 vehicles. While specific warranty details are not provided, Dorman typically offers limited warranties covering defects in material and workmanship. Consult product documentation or the manufacturer for exact warranty terms.